Dinoflagellate cyst accumulation rates of ODP Hole 146-893A from Santa Barbara Basin

The dinoflagellate cyst record from Ocean Drilling Program Hole 893A, Santa Barbara Basin, southern California, is examined at millennial-scale resolution for the past 40 kyr. Changes in cyst abundance, composition of cyst assemblages, and their diversity reflect major shifts in climate and ocean circulation in the region over this time interval. Throughout the sequence, dinoflagellate cyst assemblages are dominated by heterotrophic dinoflagellates. Brigantedinium spp. and other upwelling-related taxa such as Echinidinium and Protoperidinium americanum are abundant, indicating the continued influence of coastal upwelling on the basin during the late Quaternary. A significant increase in cyst accumulation rates is seen during the Holocene and, to a lesser extent, during shorter warming events such as Bolling/Allerod and Dansgaard-Oeschger interstadials, implying enhanced marine productivity during these periods. Cyst diversity is high during the Holocene. An increase in abundance of cysts produced by autotrophic dinoflagellates in the late Holocene suggests enhanced input of warm, nutrient-rich waters. In contrast, cyst assemblages from the Last Glacial Maximum exhibit a relatively low diversity and an increase in the cysts of heterotrophic dinoflagellates, in particular Selenopemphix nephroides. The presence of this taxon in association with Brigantedinium spp. implies substantial cooling of surface waters in the Santa Barbara Basin at that time.

U.S. overseas loans, and grants, and assistance from international organizations.

Latest issue consulted: 1945/90.

Operation of the PL480 program in Brazil

"Literature cited": p. 26-28.

Agricultural development and economic progress in the Caribbean Basin : report of the Presidential Mission on Agricultural Development in Central America and the Caribbean.

Cover title.

Job Corps, bilingual/multicultural program.

"PM 400-18."

Ron Kramer, UM football vs Missouri 1955

[TD pass from Baldacci to Kramer, 10-yard pass into end zone]

Ron Kramer, UM football vs Missouri 1955

[30-yard pass from Maddock to Kramer, set up U-M TD tackle by Curtright and Burnline.]

Ron Kramer, UM football vs Missouri, 1955

Fourth quarter, third-down pass to Kramer from Lou Baldacci for T.D. 10-yard pass into end zone.

Ron Kramer, UM football vs Missouri, 1955

2nd quarter, second down pass to Kramer from Lou Baldacci for 21-yard touchdown.

Termination of the bracero program : some effects on farm labor and migrant housing needs /

Cover title.

Malabar reading program for Mexican-American children, Los Angeles, California /

"One of a series of successful compensatory education programs."

Army without uniform. The story of the War Department's civilian training program.

Mode of access: Internet.

National Conference on Less Costly Wastewater Treatment Systems for Small Communities, U.S. Environmental Protection Agency, Date: April 12, 13, and 14, 1977, Location: Reston, Virginia.

Mode of access: Internet.